Boring holders – ISO nomenclature

CNC: Boring holders – ISO nomenclature

Like inserts and turning holders, boring holder names too follow an ISO nomenclature standard. Also, like for inserts and turning holders, if you have anything at all to do with tool selection on CNC lathes, you need to understand this nomenclature.

This document   on ISO nomenclature for CNC turning and boring holders has the details of each parameter in the name.


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Cats in Colaba

In Colaba market in Mumbai one evening, I was just hanging around watching life go by. It’s a charming little neighbourhood market where everybody seems to know everybody else, and people are sitting around chatting in front of shops.

I saw a whole lot of cats doing the same thing that I was doing, just hanging around. Being fond of cats (much to the disgust of my two dogs Laila and Shakuntala), I asked the nearby shop’s owner whose they were, and he said that they were his. They lived in a little shed next to his shop, where they slept through the day, and he let them out in the evening. It’s the first time I’ve come across a shop owner who’s combined his love for animals with his profession this way.

There’s actually a breed of cats called the Bombay cat. It’s a cross between a black American Shorthair cat and a Burmese sable (sable means sandy color) cat. The Bombay cat looks mostly like a Burmese, but is black.